Original scientific paper
https://doi.org/10.1080/00051144.2018.1455016
Wireless powered D2D communications underlying cellular networks: design and performance of the extended coverage
Hoang-Sy Nguyen
; Wireless Communications Research Group, Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam
Thanh-Sang Nguyen
; Faculty of Electrical Engineering and Computer Science, Technical University of Ostrava, Ostrava-Poruba, Czech Republic
Miroslav Voznak
; Faculty of Electrical Engineering and Computer Science, Technical University of Ostrava, Ostrava-Poruba, Czech Republic
Abstract
Because of the short battery life of user equipments (UEs), and the requirements for better quality of service have been more demanding, energy efficiency (EE) has emerged to be important in device-to-device (D2D) communications. In this paper, we consider a scenario, in
which D2D UEs in a half-duplex decode-and-forward cognitive D2D communication underlying a traditional cellular network harvest energy and communicate with each other by using the spectrum allocated by the base station (BS). In order to develop a practical design, we achieve
the optimal time switching (TS) ratio for energy harvesting. Besides that, we derive closedform expressions for outage probability, sum-bit error rate, average EE and instantaneous rate by considering the scenario when installing the BS near UEs or far from the UEs. Two
communication types are enabled by TS-based protocol. Our numerical and simulation results prove that the data rate of the D2D
communication can be significantly enhanced.
Keywords
Cellular network; D2D communication; energy efficiency; sum-bit error rate; outage probability; energy harvesting; half-duplex; time switching-based; cognitive network
Hrčak ID:
203409
URI
Publication date:
18.6.2018.
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